[R] Exact conf. interval for one proportion

Kurt Hornik Kurt.Hornik at ci.tuwien.ac.at
Tue Sep 11 08:22:54 CEST 2001

>>>>> Luis A Izquierdo writes:

> Dear R people:

> I need to estimates some confidence intervals for one
> proportion. Reference for binom.test in ctest package, I suspect is so
> old and perhaps now there are better methods. Wrong or not?  Please, I
> need your advise.

There are better methods than the standard Clopper-Pearson confidence
intervals, but they are not implemented yet.  See the docs:

  Confidence intervals are obtained by a procedure first given in
  Clopper and Pearson (1934).  This guarantees that the confidence level
  is at least \code{conf.level}, but in general does not give the
  shortest-length confidence intervals.

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